REACTIONS INDUCED BY PHYTOPARASITIC NEMAT ODES IN THE BANANA PLANT MUSA-ACUMINATA (GROUP AAA) - HIERARCHIZATION OF PARAMETERS ADJUSTED FOR VARIETAL SELECTION

Citation
T. Mateille et al., REACTIONS INDUCED BY PHYTOPARASITIC NEMAT ODES IN THE BANANA PLANT MUSA-ACUMINATA (GROUP AAA) - HIERARCHIZATION OF PARAMETERS ADJUSTED FOR VARIETAL SELECTION, Canadian journal of botany, 73(12), 1995, pp. 2006-2018
Citations number
32
Categorie Soggetti
Plant Sciences
Journal title
ISSN journal
00084026
Volume
73
Issue
12
Year of publication
1995
Pages
2006 - 2018
Database
ISI
SICI code
0008-4026(1995)73:12<2006:RIBPNO>2.0.ZU;2-S
Abstract
The susceptibility of bananas to phytoparasitic nematodes, the damages caused by nematodes, and the plant defense reactions can be evaluated respectively by the multiplication rate of parasites, the plant growt h and metabolism, and the modifications of the secondary metabolism. T he comparison, through multivariate analyses, of these four groups of parameters between two banana cultivars (Poyo and Gros Michel), differ ently susceptible to nematodes, helps to hierarchize the importance of these groups. So, the variables associated with shoot and root growth and the variables associated with plant physiology (photosynthesis, c arbon metabolism, nitrogen and mineral absorption) are quite bad param eters because they evolve anarchically with the initial nematode popul ation pressure. On the opposite, the final nematode population pressur e and the variables associated with host defense reactions (secondary metabolism) are more reliable because they give more homogeneous resul ts. It is then possible to assess the usefulness of the parameters des cribing banana susceptibility to nematodes and to give reliable criter ia to geneticians for nematode resistance breeding programs.